title: The relationship between radiological features and clinical manifestation and dental expenses of keratocystic odontogenic tumor.
abstract: OBJECTIVE
  This study was performed to identify correlations between keratocystic odontogenic tumor (KCOT) data from CT sections, and data on the KCOT clinical manifestation and resulting dental expenses.
  
  
  METHODS
  Following local Institutional Review Board (IRB) approval, a seven-years of retrospective study was performed regarding patients with KCOTs treated at the Seoul National University Dental Hospital. A total of 180 KCOT were included in this study. The following information was collected: age, gender, location and size of the lesion, radiological features, surgical treatment provided and dental expenses.
  
  
  RESULTS
  There was no significant association between the size of the KCOT and age, gender, and presenting preoperative symptoms. In both jaws, it was unusual to find KCOTs under 10 mm. The correlation between the number of teeth removed and the size of the KCOT in the tooth bearing area was statistically significant in the mandible, whereas in the maxilla, no significant relationship was found. Dental expenses compared with the size of the KCOT were found to be significant in both jaws.
  
  
  CONCLUSIONS
  The size of KCOT was associated with a significant increase in dental expenses for both jaws and the number of teeth removed from the mandible. These findings emphasize the importance of routine examinations and early detection of lesions, which in turn helps preserving anatomical structures and reducing dental expenses.
authors.affiliation: Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.
authors.forename: Jung-Hyun
authors.initials: JH
authors.lastname: Min
authors.forename: Kyung-Hoe
authors.initials: KH
authors.lastname: Huh
authors.forename: Min-Suk
authors.initials: MS
authors.lastname: Heo
authors.forename: Soon-Chul
authors.initials: SC
authors.lastname: Choi
authors.forename: Won-Jin
authors.initials: WJ
authors.lastname: Yi
authors.forename: Sam-Sun
authors.initials: SS
authors.lastname: Lee
authors.forename: Kwang-Hak
authors.initials: KH
authors.lastname: Bae
authors.forename: Jin-Woo
authors.initials: JW
authors.lastname: Choi
keywords: Computed Tomography; Cost of Illness; Odontogenic Tumors